Revealing graphene oxide toxicity mechanisms

A reactive molecular dynamics study

M. Golkaram, Adri Van Duin

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We report the first atomistic-scale study on graphene oxide (GO) toxicity, revealing potentially harmful chemical mechanisms of GO during its interactions with biomolecules. ReaxFF-based reactive molecular dynamics study was utilized to assess the impact of different functional groups on GO biocompatibility. Our study predicts different chemical reactions between the GO sheet and peptides that lead to reactive oxidative species (ROS), acidic or basic pHs and cell surface adhesions. We observe that cell-surface adhesion is a result of strong H-bonding and stable π–π stacking interaction. This stacking can also lead to the disruption of the polypeptide secondary structure.

Original languageEnglish (US)
Pages (from-to)54-62
Number of pages9
JournalMaterials Discovery
Volume1
DOIs
StatePublished - Jan 1 2015

Fingerprint

Graphite
Oxides
Graphene
Toxicity
Molecular dynamics
Adhesion
Peptides
Polypeptides
Biomolecules
Biocompatibility
Functional groups
Chemical reactions

All Science Journal Classification (ASJC) codes

  • Information Systems
  • Materials Science(all)

Cite this

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Revealing graphene oxide toxicity mechanisms : A reactive molecular dynamics study. / Golkaram, M.; Van Duin, Adri.

In: Materials Discovery, Vol. 1, 01.01.2015, p. 54-62.

Research output: Contribution to journalArticle

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